Rotary fluid-brake.



C. QHARRIS & R. G. GOLDMAN'.

ROTARY FLUID BRAKE.

APPLICATION 111.1111 $5111.28, 1911. BENEWBD JULY 1, 1914.

.[,127237' f Patented Feb. 2, 1915 2 SHEETS-SHEET 1.

f/"WJ' y G. R. HARRIS d: R, G. GOLDMAN ROTARY FLUID MAKE, APlLIC/ATION FILED SEPT`28, 1911. RENJEWED JULY l, 1914. 1,127,237, Patented Feb. 2, 1915.

2 SHEETS-SHEET 2.

in the valves 18 whereby the dogs are" brought into engagement with the rim of the runner when the valves close the ports,

as the rear wall of the slots will engage the 5` pins or studs causing them to be carried with the valves thereby bringin them in engagement with the runner.l T e closin of the ports causes a Compression ofthe fluid in brake cylinder thereby exerting a resistance on runner preventing it from rotating at the speed when the ports are open, and by causing the dogs to "be brought into en agement with the runner, the runner wil be stopped and therefore the car or vehicle will be brought to aI stop. The amount of're sist'mg or braking force exerted .upon the -runner depends upon the extent the ports in disk 5 are closed by the valves. The

y valves will not .carry the dogs into engage- 20 ment with the runner until they 'are moved to their limit of movement in closing the ports.

It will be noted that the cylinderis divided into two compression chambers, and that compression takes place between two ofl the pistons and the two cylinderl heads at all times.

The shaft 6 represents the axle ordrive shaft, and therefore when the axle of a car rkrotates the runner Z will rotate. 'The rotation of the runner causes the cylinder heads to rotate due to the engagement of the teeth A ofthe runner with the teeth of the heads,`

and the. pistons will becarried with. the

runner and cause theairto be compressedv between the heads and pistons. If thevalves 1` are wide open the air, or fluid will-passthrough the ports and thence into 'the cylinder on the opposite'side of, 4the heads 40. from that in which the compression is taking place, and therefore the 'runner will trayel freely, but 'as soon as the ports'are partly closed by the valves 18 the free cir culatmg of the fluid is interfered with, and

a resistance is exerted on the runner reduc- .ing its speed thereby reducing the speed 'of the car, by the .compression before and the suctior behind the piston heads. Of course, when'the valves are entirely closed the compression `is such that the travel of the runner will be impeded to such an extent that it will be caused to stop, and when the valves g are thrown 'to their limit of .movement the l dogs are actuated causing them to engage the runner and thereby assisting in bringing the runner and car to a stop.

From the foregoing it will be seen that a device has been provided which will bel positive and uniform in its action; frictionless 1&0 'and free from the wear and tear caused by wornout brake shoes and bands.

It is evident that many slight dalterations might be made inthe form and arrangement of the various` parts without departing uil; from the spirit'and scope of our invention,

` cylinder head mounted and hence we do not wish to be limited to the exact construction herein set forth.

Having fully described our invention, what we desire to secure by Letters Patent 1s:- 70

1. In a rotary fluid brake, the combination .with a casing and a runner having n v compression chamber formed therebetween,

of cylinder heads mounted on the casing and pistons mounted on the runner for compressing the fluid in the compression chamber, equalizing chambers lin 'communication with the compression chamber for'conducting the fluid from the high pressure to the/ low pressure sides of. the cylinder heads and 8o means for controlling the How' of the fluid throulgh said equalizing chambers y 2'. nu rotary fluid brake the combination with a casing and a runner having a compression chamber formed therebetween, of a ss in thecasingand a piston -mounted on the runner for compress ing thefluid inthe compression chamber between the head and piston, an ualizingchamber in communication with t e comso 'ression chamber for conducting the fluid om the' high pressure to the low-pressure side ofthe cyhnder head, and means for I ,controlling theow of the Huid through saidequahzing chamber.

3. In a rotary fluid brake, the vcombination with a casing and a `unner, one of which is stationary, havinga compression chamber formed therebetween, of cylinder heads mounted on the casing `and pistons 10b mounted on the runnerfor-compressingthe `fluid in the compression chamber, equa11zing chambers in communication with the compression chamber for conducting thhuid from the big.:` 'rassure to the low pressure 10.5

Asidesof the cy inder heads and means fol'v controlling the flow of the fluid `througlM said equalizing chambers. f

4., In a .rotary iluid .brake the combination with a casing anda runner, of cylinder heads mounted in the casing' and pistons on# the runner ,for forming. at least o ecompression chamber for each cylinder `hea said heads and pistons compreing the flu' in the chambers' equalizing` chambers in 115 communication with the compression chambers for conducting the fluid from the high pressure to the low pressure sides of the cylinder heads and means for contrqllin 'the flow of the udjzhrough said equalz chambers. 5. In a rotary fluid'brake, the combination with a caslng and a runner, havin l chamber formed' therebetween, of c lin er heads mounted; in the casing and rol er pil 125 tons loosely mounted in the runner, dividing the chamber into two lcompression chambers, equalizingl chambers for conducting the fluid to the chambers, said pistons cdming no der . niemeer ingit through the equalizing chambers and 4drawing it ronrthe equahzing chambers into the compression chambers, -said cylinder heads having recesses therein whereby the pistons are capable of passing the heads as they rotate through the casing, and means for controlling the dow of Huid through the equalizing chambers.

I 6. ln "fr rotary Huid brake, the combination with a casing and a runner, of cylinheads in the casing and pistons on the runner for compressing the fluid in the cesing7 means for conducting the fluid from and into the path of the pistons, means for controlling the flour of the iuid, and means connected to said controlling means adapted to engage the runner when the controlling means is moved to its limit or movement for assisting in stopping the runner.

7. in a rotary fluid brake, the comhinetion with a casing and a,runner7 of cylinder heads in the casing and pistons on the runner for compressing the fluid in the cas ing, means for conducting the iiuid from and into the path of the pistons, means' for controlling the How of the duid, and dogs connected 'to the controlling means adapted to engage the runner for assisting the stopping or' the runner when. the controlling means shuts oi the dow of the iuid.

8. In a rotary fluid brake the combination with a easing and a runner having a compression chamber formed therebetween?, of cylinder heads mounted on the casing, pistons mounted on the runner dividing the compression chamber into a plurality of compression chambers, equalizing chambers in communication with 'the compression chamber for conducting the fluid from the high pressure to the low 'pressure sides of thecylinder heads,4 and means for simili taneously controlling the iow of iiuid from the high pressure to the iow pressure side of all of the cylinder heads.

9. In a rotary iiuid brake, the combinetion with a casing and a runner having a compression chamber formed therebetwee of cylinder heads mounted in the casingl and pistons on the runner, equalizing charnofthe cylinder heads, and means for simul-L taneously controlling the iow of the Huid?.

through the inlet and outlet ofthe equalizing chambers.

l0. in e rotary duid brake, the combination with a Casin and a runner, of cylin- -der heads monnte in the casin and pistons on the runner, equalizing cham ers for conducting the fluid from the high to the 10W pressure side of the cylinder head, said chamber having ports comm'miicatingwith the high and low pressure sides of the cylinder heads, and means for eontrolling'the dow of the fluid through said equalizing chambers.

il. ln a rotary i'iuid brake, the combination with a casing and a runner, of cylinder heads in the casing and pistons on the runner orcompressing the fluid in the caslng, means or controlling the flowof the fluid and means connected to said controlling means adapted to engage the runner when the controlling means is moved to its limit of movement for assisting and stopping the runner.

12. In a rotary fluid brake, the combination with a casing, of'a runner, of cylinder heads in the casing and pistons on the runner for compressing the fluid in the casing, passages `for conducting the iuid from the high pressure to the low ressure side of the cylinder heads, means How of the fluid through the passages, and means connected to said controlling means or controlling the adapted to engage the runner when the controlling means is moved toits limit of movement for assisting and stopping the runner.

ln testimony whereof we affix our signatures, in the presence of Witnesses.

CHARLES R. HARRIS..

RUTHERFORD G. GOLDMAN. lNitnesses B. H. LAUoHs,

C. H. BATEMAN,

E. D. Hoeren,v

H. (l. STEELE. 

